Water vehicles

Abstract

Equipment and methods that combine the use of wave powered vehicles and unmanned aerial vehicles (UAVs or drones). A UAV can be launched from a wave-powered vehicle, observe another vessel, and report the results of its observation to the wave-powered vehicle, and the wave-powered vehicle can report the results of the observation to a remote location. The UAV can land on water and can then be recovered by the wave-powered vehicle.

What is claimed is: 
     
       1. An apparatus comprising:
 an unmanned aerial vehicle (UAV); 
 an autonomous water vehicle (AWV); 
 a hull that is part of the AWV, or is towed behind the AWV; and 
 a tube, mounted to the hull, for launching an UAV, wherein:
 the UAV, prior to being launched, is in a folded form, and when launched, adopts an unfolded form in which the UAV functions as the UAV; 
 the UAV comprises a recovery hook which remains above a surface of water after the UAV lands on the water; 
 a recovery cable, coupled with the AWV, for engaging the recovery hook of the UAV when the UAV is in the water; and 
 wherein the recovery cable is ejected from the tube from which the UAV is launched. 
 
 
     
     
       2. The apparatus of  claim 1 , and further comprising means for providing wave-powered propulsion to the AWV so that the AWV is a wave-powered vehicle (WPV). 
     
     
       3. The apparatus of  claim 1 , and further comprising:
 communications equipment on the AWV for receiving and transmitting communications from the UAV and for transmitting corresponding communications to a receiving station at a remote location. 
 
     
     
       4. The apparatus of  claim 1 , wherein:
 the recovery cable comprises a terminal portion that floats on the surface of the water; and 
 the UAV comprises a means for closing the recovery hook when contact with the recovery cable is detected. 
 
     
     
       5. The apparatus of  claim 4 , wherein the AWV further comprises a force sensing switch connected to the recovery cable for detecting a successful engagement of the recovery hook with the recovery cable. 
     
     
       6. The apparatus of  claim 5 , wherein the AWV comprises a winch for pulling the recovery cable after the force sensing switch detects the successful engagement of the recovery hook with the recovery cable. 
     
     
       7. An apparatus comprising:
 an unmanned aerial vehicle (UAV); 
 an autonomous water vehicle (AWV); 
 a hull that is part of the AWV, or is towed behind the AWV; and 
 a launch tube mounted to the hull for storing the UAV in a collapsed form, the launch tube ejecting the collapsed UAV from the launch tube whereupon the UAV, when ejected, adopts an unfolded form in which the UAV functions as the UAV, wherein the launch tube deploys and retracts a recovery cable, the recovery cable having recovery cable engagement elements and the UAV in water having cooperating UAV engagement elements allowing at least one of the UAV engagement elements to engage with at least one of the recovery cable engagement elements, thereby rendering the UAV engaged with the recovery cable. 
 
     
     
       8. The apparatus of  claim 7 , and further comprising elements for providing wave-powered propulsion to the hull. 
     
     
       9. The apparatus of  claim 7 , further comprising communications equipment for receiving and transmitting communications from the UAV and for transmitting corresponding communications to a receiving station at a remote location. 
     
     
       10. The apparatus of  claim 7 , further comprising receiving and transmitting communications from the UAV and transmitting corresponding communications to a receiving station at a remote location. 
     
     
       11. A method performed by an autonomous water vehicle (AWV) and an unmanned aerial vehicle (UAV) the method comprising:
 the AWV launching the UAV into flight from a launch tube; 
 the UAV gathering information while flying; 
 the UAV landing in water; 
 the AWV determining a location where the UAV landed in the water; 
 the AWV navigating to the location; 
 the AWV moving in a closed figure around the location of the UAV in the water until a force sensing switch connected to a recovery cable ejected from the launch tube detects a successful engagement of a UAV recovery means with the recovery cable; and 
 the AWV recovering the UAV. 
 
     
     
       12. The method of  claim 11 , wherein the AWV is a wave-powered vehicle (WVP). 
     
     
       13. The method of  claim 12 , wherein the AWV includes a swimmer and a tether, such that when the AWV is in wave-bearing water, the swimmer is submerged at an end of the tether and interacts with the water to generate forces which move the AWV in a direction having a horizontal component. 
     
     
       14. An apparatus comprising an autonomous water vehicle (AWV) and an unmanned aerial vehicle (UAV) wherein:
 the AWV comprises;
 a hull that is part of the AWV or towed behind the AWV; 
 means for navigating to a desired location; 
 a launch tube mounted to the hull for storing the UAV in a collapsed form; 
 a mechanism for ejecting a collapsed UAV from the launch tube whereupon the UAV, when ejected, adopts an unfolded form, the mechanism comprising one or more of a pre-loaded spring, an elastic bungee, compressed air, and a pyrotechnic; 
 a recovery cable for recovering the UAV after the UAV lands in water, the recovery cable ejected from the launch tube and having a floating terminal portion; and 
 
 the UAV comprises;
 a recovery hook for engaging the recovery cable when the AWV approaches the UAV. 
 
 
     
     
       15. The apparatus of  claim 14 , wherein the AWV includes a swimmer and a tether, such that when the AWV is in wave-bearing water, the swimmer is submerged at an end of the tether and interacts with the water to generate forces which move the AWV in a direction having a horizontal component. 
     
     
       16. The apparatus of  claim 14 , wherein the UAV closes the recovery hook when contact when the recovery cable is detected. 
     
     
       17. The apparatus of  claim 16 , wherein the AWV further comprises a force sensing switch connected to the recovery cable for detecting a successful engagement of the recovery hook with the recovery cable. 
     
     
       18. The apparatus of  claim 17 , wherein the AWV comprises a winch for pulling the recovery cable after the force sensing switch detects the successful engagement of the recovery hook with the recovery cable. 
     
     
       19. The apparatus of  claim 14 , further comprising communications equipment for receiving and transmitting communications from the UAV and for transmitting corresponding communications to a receiving station at a remote location.